GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/14585
[SPARK-16975][SQL] Column-partition path starting '_' should be handled
correctly
## What changes were proposed in this pull request?
```
scala> spark.range(10).withColumn("_locality_code",
$"id").write.partitionBy("_locality_code").save("/tmp/parquet20")
scala> spark.read.parquet("/tmp/parquet20")
org.apache.spark.sql.AnalysisException: Unable to infer schema for
ParquetFormat at /tmp/parquet20. It must be specified manually;
```
## How was this patch tested?
Pass the Jenkins with a new test case.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-16975-PARQUET
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14585.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #14585
----
commit dd9943c5a03477e0345e571e3005acf1c216b420
Author: Dongjoon Hyun <dongj...@apache.org>
Date: 2016-08-10T20:53:54Z
[SPARK-16975][SQL] Column-partition path starting '_' should be handled
correctly
----
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